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1.10: Light-emitting diodes (LEDs)

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    3295
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    Light-emitting diodes (LEDs)

    Light-emitting diodes (LEDs) produce light from electricity using semiconductor materials. They operate from a low DC voltage and produce little heat because there is no incandescent filament. They are available in a range of colours, with red, green, and yellow being the most common.

    LED.jpg
    Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    1. Individual LED
      sevenSegmentDisplay.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    2. Seven-segment display